1. Department of Pediatrics, Drexel University College of Medicine and St Christopher’s Hospital for Children, Philadelphia, Pennsylvania;
2. Department of Epidemiology and Biostatistics, Dornsife School of Public Health, Drexel University, Philadelphia, Pennsylvania; and
3. Division of General Pediatrics, Icahn School of Medicine at Mount Sinai and Mount Sinai Kravis Children’s Hospital, New York, New York